package binary_tree

import "fmt"

func PrintPaperFolding(num int){
	if num <= 0 {return}
	PrintDirection(1, num, true)
}

func PrintDirection(layer int, num int, isDown bool) {
	if num < layer {return}
	PrintDirection(layer+1, num, true)
	if isDown {
 		fmt.Println("凹")
	} else {
		fmt.Println("凸")
	}
	PrintDirection(layer+1, num, false)
}
